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This is a solution in which a gas is dissolved in a liquid. Fizzy drinks are solutions of a gas in a
liquid. For example, in soda water, coca-cola, cocopina, and cherry plum carbon dioxide is
dissolved in water.
SATURATED AND UNSATURATED SOLUTIONS
A saturated solution is the one in which no more solute can dissolve. If more solute is added to
a saturated solution, undissolved crystals of the solute will rest at the bottom of the container
without dissolving. An unsaturated solution is the one in which more solute can dissolve.
WAYS OF MAKING A SATURATED SOLUTION UNSATURATED
Adding more solvent to the solution.
Increasing the temperature of the solution i.e. by heating
WAYS OF MAKING UNSATURATED SOLUTION SATURED
Add more solute to a liquid.
Evaporate the solvent from an unsaturated solution.
Lowering the temperature of the solution.
FACTORS AFFECTING SOLUBILITY
a. TEMPERATURE
The solubility of solids in liquids increases as the temperature increases, and decreases as the
temperature decreases. When temperature increases, solvent particles gain kinetic energy and
collide frequently with solute particles, hence speeding up the solubility.
b. SIZE OF PARTCILES
Solubility of solids increases with an increase in surface area and decreases with a decrease in
surface area. Thus, powders dissolve more quickly than lumps in the same volume of solvent.
This is because; small particles can easily come into contact with solvent molecules, while it is
difficult for solvent molecules to surround large particles.
c. POLARITY